1N4478C

Single Zener Diodes Overview

The JANTX1N4478C is a military-qualified Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 36 V with a tolerance of 5% and a maximum power dissipation of 1.5 W. The device exhibits a Zener impedance of 27 Ohms at a test current of 7 mA. It operates within a temperature range of -65°C to +175°C and utilizes an axial DO-41 package for through-hole mounting.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bond
• Qualified per MIL-PRF-19500/406 for high-reliability applications
• Suitable for environments where failure cannot be tolerated

Single Zener Diodes Applications

• Military-grade voltage regulation circuits
• High-reliability aerospace systems
• Critical defense electronics requiring stable reference voltages

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm exact qualification levels and testing requirements. Ensure compatibility with MIL-PRF-19500/406 standards for intended deployment. Confirm package dimensions and lead specifications match design constraints before procurement.

Single Zener Diodes Selection Notes

Select this component for designs requiring robust voltage regulation under extreme thermal conditions. The 1.5 W power rating supports substantial current handling in axial packages. Verify that the 36 V breakdown voltage aligns with circuit requirements and that the 5% tolerance meets system precision needs.

Single Zener Diodes Part Context

This part belongs to the 1N4460–1N4496 series of 1.5 W Zener diodes. These devices are industry-recognized regulators offering various voltage selections from 3.3 V to 200 V. The JANTX designation indicates enhanced testing beyond standard JAN levels, ensuring higher reliability for critical applications.

Single Zener Diodes Replacement Considerations

Consult official substitution lists for equivalent parts such as 1N4478D or commercial variants like 1N4478/TR. Verify parameter equivalence and qualification level compatibility before replacing.